Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach o lang xa hoi. ((hieu ve) OR (hieu va)) cham xuc ((va danh) OR (va dinh)) dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach o lang xa hoi. ((hieu ve) or (hieu va)) cham xuc ((va danh) OR (va dinh)) dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach o lang xa hoi. ((hieu ve) or (hieu va)) cham xuc ((va danh) OR (va dinh)) dai cua tre*.